| 摘要 |
PURPOSE:To improve the maintenance operation function and the efficiency, by transmitting automatically maintenance information for an alarm signal with a voice signal after the alarm signal is transmitted as a combinational pattern of multifrequency signals. CONSTITUTION:A voice signal of maintenance information is transmitted automatically from a voice transmitting circuit VGEN in accordance with the signal on the alarm signal receiving confirmation line from another station. That is, the alarm signal from a telephone exchange system EX is gathered by an alarm signal gathering circuit SVP, and a control circuit CTL issues a command to an alarm signal transmitting circuit ALMSND in accordance with generation of the alarm signal. Then, the circuit ALMSEND uses a multifrequency ringer MFOSC to transmit a combinational pattern of multifrequency signals to an alarm line TRK in accordance with the type of the alarm signal. Next, the voice transmitting circuit VGEN converts the digital pattern of the voice signal for maintenance information, which is stored in a storage circuit MEM, to an analogue voice signal by a D/A converter DAC and transmits it. |
